c#网络唤醒局域网内计算机（用mac地址）
方法一：
public void WakeUp(string macString)
{
try
{
if (macString.Split('-').Length == 6)
{
string macStr = macString.Replace('-', ' '); ;
byte[] macByteArray = HexStringSToByteArray(macStr);
UdpClient client = new UdpClient();
client.Connect(IPAddress.Broadcast, 1234);//IPAddress.Broadcast：默认广播地址"255.255.255.255"
//client.Connect("127.0.0.1", 1234);
//print(IPAddress.Broadcast);
byte[] packet = new byte[17 * 6];
for (int i = 0; i < 6; i++)
{
packet[i] = 0xFF;
}
for (int i = 1; i <= 16; i++)
{
for (int ii = 0; ii < 6; ii++)
{
packet[i * 6 + ii] = macByteArray[ii];
}
}
int a = client.Send(packet, packet.Length);
print("开机指令发送");
}
}
catch (Exception ex)
{
// MessageBox.Show("网络唤醒失败:" + ex.StackTrace + " \r\n" + ex.Message);
}
}
/// <summary>
/// 2位16进制转int
/// </summary>
/// <param name="hex"></param>
/// <returns></returns>
public static int HexStringToInt(string hex)
{
int num1 = 0;
int num2 = 0;
char[] nums = hex.ToCharArray();
if (hex.Length == 2)
{
for (int i = 0; i < nums.Length; i++)
{
String strNum = nums[i].ToString().ToUpper();
switch (strNum)
{
case "A":
strNum = "10";
break;
case "B":
strNum = "11";
break;
case "C":
strNum = "12";
break;
case "D":
strNum = "13";
break;
case "E":
strNum = "14";
break;
case "F":
strNum = "15";
break;
default:
break;
}
if (i == 0)
{
num1 = int.Parse(strNum) * 16;
}
if (i == 1)
{
num2 = int.Parse(strNum);
}
}
}
return num1 + num2;
}
/// <summary>
/// 16进制字符串转byte[] 48 65 6C 6C 6F 20 57 6F 72 6C 64 21
/// </summary>
/// <param name="hexValues"></param>
/// <returns></returns>
public static byte[] HexStringSToByteArray(string hexValues)
{
string[] hexValuesSplit = hexValues.Split(' ');
byte[] val = new byte[hexValuesSplit.Length];
int i = 0;
foreach (string hex in hexValuesSplit)
{
int value = HexStringToInt(hex);
val[i] = (byte)value;
i++;
}
return val;
}
方法二：
private IPEndPoint point;
private UdpClient client = new UdpClient();
/**
* 唤醒远程机器方法
* @param
* mac 要唤醒的机器的MAC
* IP
* port udp消息发送端口
*
* 摘要：唤醒方法为网卡提供的魔术封包功能，即以广播模式发送6个FF加上16遍目标MAC地址的字节数组
**/
private void wakeUp(string mac, int port, string ip)
{
byte[] magicBytes = getMagicPacket(mac);//例："18 31 BF 4D DC 9A"
point = new IPEndPoint(IPAddress.Parse(ip), port);//广播模式:255.255.255.255
try
{
client.Send(magicBytes, magicBytes.Length, point);
}
catch (SocketException e) { MessageBox.Show(e.Message); }
}
/// <summary>
/// 字符串转16进制字节数组
/// </summary>
/// <param name="hexString"></param>
/// <returns></returns>
public static byte[] strToHexByte(string hexString)
{
hexString = hexString.Replace(" ", "");
if ((hexString.Length % 2) != 0)
hexString += " ";
byte[] returnBytes = new byte[hexString.Length / 2];
for (int i = 0; i < returnBytes.Length; i++)
returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
return returnBytes;
}
/// <summary>
/// 拼装MAC魔术封包
/// </summary>
/// <param name="hexString"></param>
/// <returns></returns>
public static byte[] getMagicPacket(string macString)
{
byte[] returnBytes = new byte[102];
string commandString = "FFFFFFFFFFFF";
for (int i = 0; i < 6; i++)
returnBytes[i] = Convert.ToByte(commandString.Substring(i * 2, 2), 16);
byte[] macBytes = strToHexByte(macString);
for (int i = 6; i < 102; i++)
{
returnBytes[i] = macBytes[i % 6];
}
return returnBytes;
}
原文地址：https://www.xp.cn/b.php/112825.html
方法三：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Net.Sockets;
using System.Net;
namespace 远程唤醒开机
{
///
/// MainWindow.xaml 的交互逻辑
///
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
public static void WakeUp(byte[] mac)
{
UdpClient client = new UdpClient();
client.Connect(IPAddress.Broadcast, 9090);
//MessageBox.Show(IPAddress.Broadcast.ToString());
byte[] packet = new byte[17 * 6];
for (int i = 0; i < 6; i++)
packet[i] = 0xFF;
for (int i = 1; i <= 16; i++)
for (int j = 0; j < 6; j++)
packet[i * 6 + j] = mac[j];
int result = client.Send(packet, packet.Length);
}
private void button1_Click(object sender, RoutedEventArgs e)
{
byte[] mac = new byte[6];
mac[0] = 0x00;
mac[1] = 0x0B;
mac[2] = 0x2F;
mac[3] = 0x70;
mac[4] = 0x40;
mac[5] = 0x9E;
WakeUp(mac);
}
}
}
原文链接：https://blog.csdn.net/wangshubo1989/article/details/48286383
方法四：
/// <summary>
/// 远程开机，网卡需要具备远程唤醒功能
/// </summary>
/// <param name="mac">网卡物理地址字符数组</param>
public static void WakeUp(byte[] mac)
{
UdpClient client = new UdpClient();
client.Connect(IPAddress.Broadcast, 9090);
byte[] packet = new byte[17 * 6];
for (int i = 0; i < 6; i++)
packet[i] = 0xFF;
for (int i = 1; i <= 16; i++)
for (int j = 0; j < 6; j++)
packet[i * 6 + j] = mac[j];
int result = client.Send(packet, packet.Length);
}
// 唤醒按钮事件代码
private void button_Click(object sender, EventArgs e)
{
byte[] mac = new byte[6];
mac[0] = 0x00;
mac[1] = 0x01;
mac[2] = 0x80;
mac[3] = 0x79;
mac[4] = 0x08;
mac[5] = 0xD8;
WakeUp(mac);
}
以上几种写法逻辑都大同小异，都是通过广播ip发送给对应mac地址的设备一个包含一串"F"的信号,要注意的前提是，需要被网络唤醒的电脑一定要打开bois设置里的"允许网络唤醒"选项
